Elemental Stoicism
Although no vampire can resist the sun's light indefinitely, those elders who have mastered Fortitude to this advanced degree can stave off death for a few crucial moments. Elemental Stoicism also offers some degree of protection against fire.
System: This power is involuntary and cannot be turned off. Every hour that the character is exposed to fire or sunlight, the player must spend one blood point. All damage inflicted on the vampire by fire or sunlight during that hour is changed from aggravated to lethal, and may be soaked as such. This blood point does not count against the character's maximum expenditure per turn. A character whose blood pool is emptied by this power falls into torpor immediately and begins taking damage normally if she is still in contact with the damage source. This power does not protect the vampire's clothing or belongings against such damage - she may be able to walk through a burning building, but she'll most likely walk out of it wearing nothing but ashes.
Note: This power was published as a Discipline Technique (Fortitude 8, Obfuscate 4) in the Camarilla Guide. The rules presented for discipline techniques in the subsequent Vampire Dark Ages rules indicate that discipline techniques do not rise above level 5, as there is no need for them. Fortitude 8 is easily capable of handling this power without needing a conjunction with Obfuscate. Also, since vampires with Fortitude may use their Stamina to soak fire and sunlight, the only difference this power confers is that the damage done is lethal rather than aggravated.